EP3410615B1 - Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique - Google Patents
Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique Download PDFInfo
- Publication number
- EP3410615B1 EP3410615B1 EP17174290.1A EP17174290A EP3410615B1 EP 3410615 B1 EP3410615 B1 EP 3410615B1 EP 17174290 A EP17174290 A EP 17174290A EP 3410615 B1 EP3410615 B1 EP 3410615B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- equalization delay
- optical network
- delay adjustment
- unit
- equalization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims description 98
- 238000000034 method Methods 0.000 title claims description 41
- 239000013307 optical fiber Substances 0.000 claims description 25
- 238000012935 Averaging Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 description 39
- 230000001934 delay Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000796 flavoring agent Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
Definitions
- the present invention generally relates to adjustment of the equalization delay for optical network units after Type-B protection switching, i.e. an event wherein the optical network units coupled to a first optical line termination are switched to be coupled to a second optical line termination.
- the protecting optical fibers that couple the optical network units to the second optical line termination differ from the protected optical fibers that couple the optical network units to the first optical line termination and follow separate geographical paths. Consequently, the respective equalization delays that compensate for the difference in distance from the optical line termination to the respective optical network units must be adjusted depending on which path is active.
- a plurality of optical network units abbreviated ONUs
- ONUs In a passive optical network, abbreviated PON, a plurality of optical network units, abbreviated ONUs, is coupled to a single optical line termination, abbreviated OLT.
- the ONUs reside at the customer premises whereas the OLT is located at the central office.
- the optical fibers that couple the OLT to the plurality of ONUs typically comprise a so-called feeder fiber extending from the OLT up to a passive optical splitter, and individual optical fibers from the passive optical splitter up to the respective ONUs.
- more complex architectures exist with multiple stages of passive optical splitters respectively serving subsets of ONUs.
- Type-B protection switching is a protection scheme wherein the feeder fiber section is protected by another feeder fiber which generally follows a separate geographical path.
- the fiber length of the protected feeder fiber and the protecting feeder fiber generally differ.
- the difference in length between the protected feeder fiber and the protecting feeder fiber may be in the range of several kilometers: a 5 km feeder fiber between an OLT and an optical splitter may for instance be protected through a 20 km feeder fiber between the same OLT and optical splitter.
- the difference in length between the protected optical fibers and the protecting optical fibers translates into a different round trip time or RTT for each ONU's optical signal transported over the PON.
- the equalization delays applied by the different ONUs to compensate for the differences in RTT between the different ONUs consequently must be adjusted when the RTTs of the ONUs are altered as a result of Type-B protection switch event wherein the ONUs are switched from a first, active OLT to a second, standby OLT in the central office.
- the adjustment of the equalization delays must be performed as fast as possible to minimize loss of service after such a Type-B protection switching event.
- ITU-T Standard Specification G.987.3 also known as XG-PON or 10 Gigabit capable PON
- the optical fiber spool must have a length equal to the difference in length between the protected fiber and protecting fiber, e.g. 15 km in the above example of a 5 km protected feeder fiber and a 20 km protecting feeder fiber.
- the method relying on an optical fiber spool is rather inaccurate because the fiber length difference typically has a magnitude in the range of kilometers whereas the fiber length equalization must reach a precision in the order of meters to avoid interference between upstream transmissions of several ONUs.
- ITU-T Standard Specification G.sup51 provides four alternative solutions to the problem of equalization delay adjustment after switching from an active, protected fiber path to a standby, protecting fiber path in a PON. Each of these solutions is disadvantageous, as will be explained in the following paragraphs.
- Section 8.1 of ITU-T G.sup51 describes a pre-ranging procedure for an ONU on the protecting path without affecting the protected path.
- This pre-ranging procedure is disadvantageous because it requires upfront action, the timestamps used by the protected OLT and the protecting OLT need to be synchronised with nanosecond precision, and the pre-ranging process needs to be re-executed each time the backup, protecting path is altered, even when altered by less than a few meters.
- Section 8.2 of ITU-T G.sup51 describes the so-called POPUP method for delay equalization after a protection switching event.
- Application of the POPUP method however is restricted to GPON, i.e. Gigabit PONs operating in accordance with ITU-T Standard Specification G.984.3. It is not applicable to other flavours of Next Generation PONs such as XG-PON1 or 10 Gigabit capable PON, XGS-PON or 10 Gigabit capable symmetrical PON, NG-PON2 that uses time- and wavelength division multiplexing, etc.
- Section 8.3 of ITU-T G.sup51 describes a technique for delay equalization after a protection switching event that requires all ONUs to range sequentially.
- the technique is service intrusive, time consuming and often cannot be completed within the maximum outage time defined for a Type-B protection switchover.
- Section 8.4 of ITU-T G.sup51 describes a method for delay equalization after a Type-B protection switching event that does not require the ONUs to adjust their respective equalization delays but which instead relies on changing the zero-distance equalization delay of the backup OLT.
- the method requires upfront synchronisation of the delay caused by the fiber length between the primary OLT and the backup OLT. Thereto, the upstream PHY frame offset is upfront synchronised.
- the method is disadvantageous because the activation of a new ONU on the backup OLT is impossible until its perceived PHY frame offset is adjusted to the physical characteristics of the backup feeder fiber.
- ITU-T Standard Specification G.989.3 known as NG-PON2
- NG-PON2 describes three alternative methods to deal with the problem of equalization delay adjustment after a protection switching event in a time- and wavelength division multiplexing passive optical network or TWDM-PON.
- sections VII.2 and VII.3 describe techniques that use a pilot ONU re-tuning from channel to channel. These techniques impact the service on the entire PON as the equalization delay difference must be calculated prior to switchover. Moreover, the procedure has to be re-executed each time the backup path is altered, even by a few meters. These techniques are further restricted in use to multi-wavelength systems and therefore cannot be extended to other PON flavours like XG-PON and XGS-PON.
- Section VI1.1 of ITU-T G.989.3 Appendix VII describes an alternative method for equalization delay adjustment after a protection switching event that can be applied in alternative PON flavours like XG-PON and XGS-PON, but the proposed method has scalability problems when multiple ONUs are involved.
- United States Patent Application US 2002/0114028 A1 entitled “Health Check Algorithm for Protection Circuit in Optical Network” describes a procedure to determine the equalization delay difference between a protected OLT (404 in Fig. 4 ) and a protecting OLT (406 in Fig. 4 ). Therein, the difference in equalisation delay between a protected OLT and a protecting OLT is determined (par. [0089]). RTT measurements are used thereto (par. [0090]). The difference is averaged across the ONTs (par. [0092]), and the average value is communicated to and used by all ONTs when switching from the protected OLT to the protecting OLT (par. [0093]).
- Embodiments of the invention disclose an equalization delay adjustment device as defined by claim 1, able to adjust equalization delay of a plurality of optical network units that are coupled to a first optical line termination via respective protected optical fibers before a protection switching event and that are coupled to a second optical line termination via respective protecting optical fibers after the protection switching event, the equalization delay adjustment device comprising:
- the round trip time is measured after the switchover event, and for each ONU in the subset the equalization delay calculated from the measured round trip times is compared with the equalization delay applied by the ONU before the protection switchover.
- the change in equalization delay as a result of the protection switchover is averaged across the subset of ONUs and thereafter used to adjust the equalization delay of all ONUs.
- the method hence relies on the determination of an average equalization delay adjustment value and adjusts each ONU's equalization delay in accordance with this average equalization delay adjustment value after a Type-B protection switchover in a PON.
- the method leverages on the insight that in a Type-B protection switchover, the difference in fiber length between the active optical fiber path and the backup optical fiber path is due to the feeder section between OLT and optical splitter, which is common for all ONUs. Consequently, it is not necessary to exhaustively re-calibrate each ONU and recalculate the equalisation delay for each ONU after a protection switchover.
- the proposed method only requires information on the currently active ONUs, i.e. the change in their round trip times or equalization delays when switching from the active OLT to the backup OLT.
- Averaging this change across the ONUs that are active prior to the protection switching or a subset thereof enables to adjust the equalization delays of all ONUs, while allowing new ONUs to be activated on the backup OLT after the protection switchover event.
- the method is not restricted to multiple wavelength PONs, is accurate, fast and scalable to situations with numerous ONUs.
- the method deals with the fiber length difference at the point in time of the switchover. No upfront, service-affecting, provisioning or calibration is required.
- the backup OLT is ready to range new ONUs on the PON. It is further noticed that only a few selected ONUs, e.g. an arbitrary subset of the active ONUs coupled to the active OLT, may be processed without impact on the accuracy. Since the equalization delay difference is equal for all ONUs, there is no need to sequentially process each ONU in order to update its respective equalization delay.
- Embodiments of the equalization delay adjustment device according to the present invention, as defined by claim 2, further comprise:
- the equalization delay preferably is set zero before the round trip time is measured. Otherwise, the measured round trip time for an ONU will include the former equalization delay, applied by that ONU before the protection switchover, in which case this former equalization delay must be accounted in the calculation of the new equalization delay.
- the method relies on an adjustment of the equalization delay in its last step. Consequently, the former equalisation delay, applied by the ONU before the protection switchover, must be re-configured in the ONU before the adjustment takes place if the equalization delay was made zero for the round trip time measurement.
- An additional advantage of relying on an adjustment of the equalization delay is that the adjustment value is equal for all ONUs and therefore can be broadcasted.
- the ITU-T Standard Specification G. 9807.1, also known as XGS-PON, for instance provides a mechanism for broadcasting such equalization delay adjustment to all ONUs.
- the round trip time measurement unit is arranged to:
- the backup OLT may be controlled to send a ranging grant message to the ONU, i.e. a directed PLOAM grant message accompanied by an upstream quiet window.
- the round trip time measurement unit is arranged to:
- resetting the equalization delay of that ONU to zero, and re-sending the directed PLOAM grant message followed by an upstream quiet window may be repeated until a reply is received and the RTT can be measured for that ONU, or until n retries have failed, n being a predefined positive integer number, or until a timer expires.
- the averaging unit is arranged to iteratively remove outliers, i.e. equalization delay adjustment values that differ from the average equalization delay adjustment value by more than a given tolerance threshold, from the averaging.
- outlying samples may be removed recursively from the measurement.
- the equalisation delay adjustment values determined for the individual ONUs in the subset are compared to the average equalisation delay adjustment value. If the distance between these values exceeds a predefined tolerance value, the equalisation delay adjustment value determined for that ONU is removed from the subset of values and a new average equalisation delay adjustment value is calculated. This is repeated until all individual equalisation delay adjustment values determined for the ONUs lie within the tolerance threshold distance from the average equalisation delay adjustment value.
- the tolerance threshold value may be decreased gradually in subsequent iterations wherein outliers are removed towards a desired tolerance value.
- the equalization delay configuration unit is arranged to transmit a broadcast ranging time physical layer operation and maintenance message comprising the average equalization delay adjustment value to each optical network unit of the plurality of optical network units.
- the equalization delay adjustment device in the last step preferably broadcasts the average equalization delay adjustment value to all ONUs and therefore may use a Ranging_Time PLOAM message as defined in ITU-T Standard Specification G. 9807.1, also known as XGS-PON. This way, all ONUs can quickly and efficiently update the equalization delay and service interruption resulting from the protection switchover is further minimized.
- the present invention also concerns a corresponding equalization delay adjustment method as defined by claim 7, to adjust equalization delay of a plurality of optical network units that are coupled to a first optical line termination via respective protected optical fibers before a protection switching event and that are coupled to a second optical line termination via respective protecting optical fibers after the protection switching event, the equalization delay adjustment method comprising:
- embodiments of the invention entail a computer program product as defined by claim 8, comprising computer-executable instructions to cause the device of claim 1 to execute the steps of the method according to the invention.
- Embodiments of the invention further concern a computer readable storage medium as defined by claim 9, comprising the computer program product according to the invention.
- Fig. 1 shows a passive optical network or PON comprising a first optical line termination, OLT1 or 101, a second optical line termination, OLT2 or 102, a first optical network unit, ONU1 or 111, a second optical network unit, ONU2 or 112, a third optical network unit, ONU3 or 113, and an optical splitter 121 in between the optical line terminations 101, 102 and the optical network units 111, 112, 113.
- the first OLT 101 is coupled to the splitter 121 via a first feeder fiber 131.
- the second OLT 102 is coupled to the splitter 121 via a second feeder fiber 132.
- the first feeder fiber 131 is supposed to have a length of 20 km whereas the second feeder fiber 132 is supposed to have a length of 5 km.
- the ONUs 111, 112 and 113 are coupled to the splitter 121 via respective optical fibers 141, 142 and 143.
- the OLTs 101 and 102 typically reside in the central office whereas the ONUs 111, 112, 113 reside in an optical endpoint, for instance at the customer premises. Consequently, the downstream direction is the direction from the OLTs 101, 102 to the ONUs 111, 112, 113, and the upstream direction is the direction from the ONUs 111, 112, 113 to the OLTs 101, 102.
- a Type-B protection deployment is assumed. This means that one of the OLTs 101, 102 is active while the other OLT is standby. Consequently, also one of the feeder fibers 131, 132 is active while the other feeder fiber is standby.
- the active feeder fiber throughout this patent application also is named the protected fiber whereas the standby feeder fiber is named the protecting fiber. In case of a failure on the active path, e.g.
- a protection switchover takes place as a result of which the backup path from OLT 102 over feeder fiber 132, splitter 121 and respective fibers 141, 142, 143 to the ONUs 111, 112, 113 becomes active.
- OLT 102 takes over the downstream transmissions.
- the ONUs 111, 112, 113 as a consequence of the failure on the active path from OLT 101 loose downstream signal detection and enter the so called O6 state or Intermittent Loss-Of Downstream-Sync state or Intermittent LODS state in the ITU-T XGSPON, XGPON and NGPON2 standards.
- O6 state Intermittent Loss-Of Downstream-Sync state
- Intermittent LODS state in the ITU-T XGSPON, XGPON and NGPON2 standards.
- the ONUs 111, 112, 113 detect the downstream signal from the backup OLT 102, they return to the so called O5 state or Operation state wherein the ONUs receive and transmit data.
- the upstream bandwidth allocations to the ONUs 111, 112, 113 however are temporarily halted due to the unknown round trip time of the ONUs 111, 112, 113 on the new active path via OLT 102 and protecting feeder fiber 132.
- Fig. 2 shows the steps that will be executed to adjust the equalization delay applied by the ONUs 111, 112, 113 after the protection switchover from OLT 101 to OLT 102.
- Fig. 3 shows the components of a device executing the steps of Fig. 2 under control of controller 306.
- a few ONUs are selected. The selection may be based on information of known ONUs on previously active OLT 101. In Fig. 1 , it is assumed that OLT 101 was knowledgeable on the three ONUs 111, 112, 113, so these three ONUs will constitute the subset of selected ONUs involved in the method for equalization delay adjustment illustrated by Fig. 2 .
- step 201 reset unit 305 upon instruction of control unit 306 sets the equalization delay EqDi equal to zero for each selected ONU i , i representing an integer index for the selected ONUs.
- This step 201 is necessary to enable the RTT measurement unit 301 to measure the effective round trip time of each ONU i . Omitting this step would imply that the measured round trip time over the backup path would include the former equalisation delay EqDi as a result of which this former equalisation delay would have to be subtracted or accounted for in later calculations.
- step 202 RTT measurement unit 301 upon instruction of controller 306 sends a directed ranging grant message to each selected ONUi followed by an upstream quiet window.
- the RTT measurement unit 301 listens for the reply of each ONUi.
- the RTT measurement unit 301 in step 203 determines the round trip time RTTi of that ONU i over the backup path. If no reply is received from an ONU i within a predetermined time interval, the RTT measurement unit 301 re-sends the ranging grant message hence re-executing step 202 until a reply is received, or until a predetermined maximum number of attempts is reached, or until a certain time limit has lapsed.
- the equalisation delay adjustment determination unit 302 upon instruction of controller 306 determines the change in equalisation delay ⁇ EqD i for each ONU i as a result of the protection switch over from the active path via OLT1 to the backup path via OLT2.
- the equalization delay adjustment determination unit 302 in a first sub-step 204 calculates the new equalization delay EqD i ' from the measured round trip times RTT i , and in a second sub-step 205 calculates the difference ⁇ EqD i between the new equalization delay EqD i ' as determined in step 204 and the former equalization delay EqDi, applied by ONU i while coupled to the former active OLT 101.
- step 206 the reset unit 305 upon instruction of the control unit 306 reconfigures each ONU i in the subset with its former equalisation delay EqDi.
- This step 206 is necessary since the method will broadcast in the last step 210 only the common equalisation delay adjustment ⁇ EqD. Without step 206, the method would result with a wrong equalisation delay being assigned to the probed ONUs, i.e. the ONUs in the subset.
- step 230 the averaging unit 303 upon instruction of the controller 306 calculates the average equalisation delay adjustment ⁇ EqD delta, i.e. the average equalisation delay adjustment across the selected ONUs.
- the averaging unit 303 thereto calculates in step 207 the average equalisation delay adjustment ⁇ EqD across all selected ONUs.
- the averaging unit 303 thereafter recursively removes outlying samples from the measurement.
- the averaging unit 303 detect samples for which the distance of the equalisation delay adjustment value ⁇ EqD i as determined in step 205 to the average equalisation delay adjustment value ⁇ EqD as calculated in step 207 is above a specified tolerance T.
- step 207 the averaging unit 303 re-calculates the average equalisation delay adjustment ⁇ EqD after removal of the outliers.
- the steps 208, 209 and 207 are iteratively executed until all maintained samples ⁇ EqD i lie within a distance
- the equalisation delay configuration unit 304 upon instruction of the controller 306 adjust all ONU's respective equalisation delay by broadcasting the average equalisation delay adjustment value ⁇ EqD.
- the equalisation delay configuration unit 304 thereto may for instance broadcast a Ranging_Time PLOAM message containing the average equalisation delay adjustment value ⁇ EqD as determined in the last iteration of step 207.
- the ONUs transmit upstream bursts taking into account their respective updated equalisation delay values EqDi' that are valid on the newly active OLT 102.
- the services of all ONUs are restored and normal operation on the PON is resumed, including the ranging and provisioning of new ONUs.
- Fig. 4 shows a suitable computing system 400 according to an embodiment of the invention.
- Computing system 400 is suitable for implementing units 301, 302, 303, 304, 305 and 306 according to the above described embodiments.
- Computing system 400 may in general be formed as a suitable general purpose computer and comprise a bus 410, a processor 402, a local memory 404, one or more optional input interfaces 414, one or more optional output interfaces 416, a communication interface 412, a storage element interface 406 and one or more storage elements 408.
- Bus 410 may comprise one or more conductors that permit communication among the components of the computing system 400.
- Processor 402 may include any type of conventional processor or microprocessor that interprets and executes programming instructions.
- Local memory 404 may include a random access memory (RAM) or another type of dynamic storage device that stores information and instructions for execution by processor 402 and/or a read only memory (ROM) or another type of static storage device that stores static information and instructions for use by processor 402.
- RAM random access memory
- ROM read only memory
- Input interface 414 may comprise one or more conventional mechanisms that permit an operator to input information to the computing device 400, such as a keyboard 420, a mouse 430, a pen, voice recognition and/or biometric mechanisms, etc.
- Output interface 416 may comprise one or more conventional mechanisms that output information to the operator, such as a display 440, etc.
- Communication interface 412 may comprise any transceiver-like mechanism such as for example one or more Ethernet interfaces that enables computing system 400 to communicate with other devices and/or systems, for example with other computing devices 481, 482, 483.
- the communication interface 412 of computing system 400 may be connected to such another computing system by means of a local area network (LAN) or a wide area network (WAN) such as for example the internet.
- Storage element interface 406 may comprise a storage interface such as for example a Serial Advanced Technology Attachment (SATA) interface or a Small Computer System Interface (SCSI) for connecting bus 410 to one or more storage elements 408, such as one or more local disks, for example SATA disk drives, and control the reading and writing of data to and/or from these storage elements 408.
- SATA Serial Advanced Technology Attachment
- SCSI Small Computer System Interface
- any other suitable computer-readable media such as a removable magnetic disk, optical storage media such as a CD or DVD, -ROM disk, solid state drives, flash memory cards, ... could be used. It is noticed that the entire method according to the present invention can be executed on the OLT becoming active. Computing system 400 could thus correspond to the processing system available in OLT 102. Computing system 400 however also can be an external machine in which case the OLT becoming active can be considered an I/O device used to communicate with the ONU to perform steps 201, 202, 203, 206 and 210 described here above.
- top, bottom, over, under, and the like are introduced for descriptive purposes and not necessarily to denote relative positions. It is to be understood that the terms so used are interchangeable under appropriate circumstances and embodiments of the invention are capable of operating according to the present invention in other sequences, or in orientations different from the one(s) described or illustrated above.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Small-Scale Networks (AREA)
Claims (9)
- Dispositif d'ajustement de retard d'égalisation capable d'ajuster le retard d'égalisation d'une pluralité d'unités de réseau optique qui sont couplées à une première terminaison de ligne optique (101) via des fibres optiques protégées respectives (131 ; 141-143) avant un événement de commutation de protection et qui sont couplées à une seconde terminaison de ligne optique (102) via des fibres optiques de protection respectives (132 ; 141-143) après ledit événement de commutation de protection, ledit dispositif d'ajustement de retard d'égalisation comprenant :- une unité de mesure de temps aller-retour (301) qui est agencée pour mesurer après ledit événement de commutation de protection un temps aller-retour RTTi pour chaque unité de réseau optique (111, 112, 113) dans un sous-ensemble de ladite pluralité d'unités de réseau optique sur lesdites fibres optiques de protection respectives (132 ; 141 -143) ;- une unité de détermination d'ajustement de retard d'égalisation (302) qui est agencée pour déterminer pour chaque unité de réseau optique (111, 112, 113) dans ledit sous-ensemble d'unités de réseau optique une valeur d'ajustement de retard d'égalisation respective ΔEqDi à partir d'une comparaison du retard d'égalisation calculé à partir du dudit temps aller-retour RTTi mesuré après ledit événement de commutation de protection avec le retard d'égalisation appliqué par ladite unité de réseau optique (111, 112, 113) avant ledit événement de commutation de protection, ayant pour résultat un sous-ensemble de valeurs d'ajustement de retard d'égalisation ΔEqDi ;- une unité de moyennage (303) qui est agencée pour déterminer une valeur d'ajustement de retard d'égalisation moyenne ΔEqD en moyennant ledit sous-ensemble de valeurs d'ajustement de retard d'égalisation ΔEqDi déterminé pour ledit sous-ensemble d'unités de réseau optique (111, 112, 113) ; et- une unité de configuration de retard d'égalisation (304) qui est agencée pour configurer ladite valeur d'ajustement de retard d'égalisation moyenne ΔEqD dans chaque unité de réseau optique de ladite pluralité d'unités de réseau optique.
- Dispositif d'ajustement de retard d'égalisation selon la revendication 1, comprenant en outre :- une unité de réinitialisation (305) qui est agencée pour régler le retard d'égalisation EqDi de chaque unité de réseau optique dudit sous-ensemble d'unités de réseau optique (111, 112, 113) égal à zéro avant la mesure dudit temps aller-retour RTTi, et pour rerégler le retard d'égalisation EqDi de chaque unité de réseau optique dudit sous-ensemble d'unités de réseau optique (111, 112, 113) à sa valeur précédente après la mesure dudit temps aller-retour RTTi.
- Dispositif d'ajustement de retard d'égalisation selon la revendication 1, dans lequel ladite unité de mesure de temps aller-retour (301) est agencée pour :- transmettre un message d'octroi d'exploitation et de maintenance de couche physique dirigé à une unité de réseau optique (111, 112, 113) suivi d'une fenêtre silencieuse en amont pour mesurer ledit temps aller-retour RTTi pour ladite unité de réseau optique (111, 112, 113).
- Dispositif d'ajustement de retard d'égalisation selon la revendication 2 et la revendication 3, dans lequel ladite unité de mesure de temps aller-retour (301) est agencée pour :- réinitialiser de manière répétée ledit retard d'égalisation et transmettre ledit message d'octroi d'exploitation et de maintenance de couche physique dirigé à une unité de réseau optique si aucune réponse n'est reçue en provenance de ladite unité de réseau optique dans un intervalle de temps donné.
- Dispositif d'ajustement de retard d'égalisation selon la revendication 1, dans lequel ladite unité de moyennage (303) est agencée pour éliminer de manière itérative des valeurs aberrantes, c'est-à-dire des valeurs d'ajustement de retard d'égalisation qui diffèrent de ladite valeur d'ajustement de retard d'égalisation moyenne ΔEqD de plus d'un seuil de tolérance donné T, à partir dudit moyennage.
- Dispositif d'ajustement de retard d'égalisation selon la revendication 1, dans lequel ladite unité de configuration de retard d'égalisation (304) est agencée pour transmettre un message d'exploitation et de maintenance de couche physique de temps de télémétrie de diffusion comprenant ladite valeur d'ajustement de retard d'égalisation moyenne ΔEqD à chaque unité de réseau optique de ladite pluralité d'unités de réseau optique.
- Procédé d'ajustement de retard d'égalisation pour ajuster le retard d'égalisation d'une pluralité d'unités de réseau optique qui sont couplées à une première terminaison de ligne optique (101) via des fibres optiques protégées respectives (131 ; 141-143) avant un événement de commutation de protection et qui sont couplées à une seconde terminaison de ligne optique (102) via des fibres optiques de protection respectives (132 ; 141-143) après ledit événement de commutation de protection, ledit procédé d'ajustement de retard d'égalisation comprenant :- la mesure (203) après ledit événement de commutation de protection d'un temps aller-retour RTTi pour chaque unité de réseau optique (111, 112, 113) dans un sous-ensemble de ladite pluralité d'unités de réseau optique sur lesdites fibres optiques de protection respectives (132 ; 141-143) ;- la détermination (220) pour chaque unité de réseau optique (111, 112, 113) dans ledit sous-ensemble d'unités de réseau optique d'une valeur d'ajustement de retard d'égalisation respective ΔEqDi à partir d'une comparaison du retard d'égalisation calculé à partir dudit temps aller-retour RTTi mesuré après ledit événement de commutation de protection avec le retard d'égalisation appliqué par ladite unité de réseau optique (111, 112, 113) avant ledit événement de commutation de protection, ayant pour résultat un sous-ensemble de valeurs d'ajustement de retard d'égalisation ΔEqDi ;- le moyennage (230) dudit sous-ensemble de valeurs d'ajustement de retard d'égalisation ΔEqDi pour ainsi déterminer une valeur d'ajustement de retard d'égalisation moyenne ΔEqD ; et- la configuration (210) de ladite valeur d'ajustement de retard d'égalisation moyenne ΔEqD dans chaque unité de réseau optique de ladite pluralité d'unités de réseau optique.
- Produit de programme informatique comprenant des instructions exécutables par ordinateur pour amener le dispositif de la revendication 1 à exécuter les étapes du procédé selon la revendication 7.
- Support de stockage lisible par ordinateur (404 ; 408) comprenant le produit de programme informatique selon la revendication 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17174290.1A EP3410615B1 (fr) | 2017-06-02 | 2017-06-02 | Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17174290.1A EP3410615B1 (fr) | 2017-06-02 | 2017-06-02 | Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3410615A1 EP3410615A1 (fr) | 2018-12-05 |
EP3410615B1 true EP3410615B1 (fr) | 2022-05-04 |
Family
ID=59034471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17174290.1A Active EP3410615B1 (fr) | 2017-06-02 | 2017-06-02 | Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP3410615B1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021024346A1 (fr) * | 2019-08-05 | 2021-02-11 | 日本電信電話株式会社 | Dispositif de transmission et procédé de transmission |
JP7389888B2 (ja) * | 2019-08-26 | 2023-11-30 | 華為技術有限公司 | 光ネットワーク終端装置接続を決定する方法、装置及びシステム |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6778781B2 (en) * | 2001-02-12 | 2004-08-17 | Lucent Technologies Inc. | Health check algorithm for protection circuit in optical network |
US8902932B2 (en) * | 2008-10-02 | 2014-12-02 | Cortina Systems, Inc. | Systems and methods for a network device to update timing packets to reflect delay |
TWI487304B (zh) * | 2012-12-07 | 2015-06-01 | Ind Tech Res Inst | 光纖網路故障復原方法 |
-
2017
- 2017-06-02 EP EP17174290.1A patent/EP3410615B1/fr active Active
Also Published As
Publication number | Publication date |
---|---|
EP3410615A1 (fr) | 2018-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9025949B2 (en) | Equalization delay agnostic protection switching in protected passive optical networks | |
US9473836B2 (en) | Maintaining channel-invariant optical network unit (ONU) equalization delay in a passive optical network | |
US9515725B2 (en) | Rogue optical network interface device detection | |
CN102075238B (zh) | 一种无源光网络及其保护倒换方法 | |
WO2013014531A2 (fr) | Techniques de détection de défauts optiques dans des réseaux optiques passifs | |
CN109039444B (zh) | Onu异常检测方法、装置、olt及光网络 | |
WO2009086788A1 (fr) | Mesures de puissance de rafale à l'aide de mesure de puissance moyenne | |
TWI487304B (zh) | 光纖網路故障復原方法 | |
US20080240714A1 (en) | Station terminating device, subscriber terminating device, communication system, control method of the devices, and recording medium recorded with program | |
US20150358076A1 (en) | Port-dualized optical line terminal and passive optical network system capable of measuring rssi of standby line in standby port, and method of determining stability of standby line using the same | |
EP3410615B1 (fr) | Dispositif de réglage de retard d'égalisation et procédé pour protéger des unités de réseau optique | |
EP3098979B1 (fr) | Procédé et dispositif de détection de luminance longue durée | |
EP3602840B1 (fr) | Commande et gestion d'extenseurs de portée de réseau optique passif | |
EP3764568B1 (fr) | Procédé et système de mesure de puissance en cas de mise à jour d'un réseau optique passif | |
US20090104878A1 (en) | Signal monitoring device, communication system, signal monitoring method, and recording medium for recording program of signal monitoring device | |
US9344780B2 (en) | Communication control devices and method | |
US10153842B2 (en) | Emulating rogue optical network unit behavior in a passive optical network | |
US9054850B2 (en) | Method and device for sending data in passive optical network | |
EP3059882B1 (fr) | Appareil et procédé de détection de signal en liaison montante de réseau optique | |
CN101505439A (zh) | 用于协调无源光网络中的测量和校准的方法 | |
JP4173044B2 (ja) | 光バースト送受信網における上り帯域使用方法 | |
KR101078052B1 (ko) | 수동 광 통신 망에서의 수신 데이터 복원 장치 및 방법 | |
EP3609096A1 (fr) | Procédé et dispositif pour déterminer et construire une topologie dans un réseau optique passif | |
CN101783975A (zh) | 通信网络中的测距方法、装置及系统 | |
CA2639905A1 (fr) | Detection et minimisation d'effets de defaillances de reseau optique |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190605 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA TECHNOLOGIES OY |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 602017056795 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: H04B0010077000 Ipc: H04B0010032000 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H04B 10/032 20130101AFI20210301BHEP Ipc: H04B 10/272 20130101ALI20210301BHEP Ipc: H04B 10/077 20130101ALI20210301BHEP Ipc: H04J 3/06 20060101ALI20210301BHEP Ipc: H04B 10/079 20130101ALI20210301BHEP Ipc: H04J 14/02 20060101ALI20210301BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20210423 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20211203 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1490251 Country of ref document: AT Kind code of ref document: T Effective date: 20220515 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Ref country code: DE Ref legal event code: R096 Ref document number: 602017056795 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20220504 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1490251 Country of ref document: AT Kind code of ref document: T Effective date: 20220504 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220905 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220804 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220805 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220804 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602017056795 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
26N | No opposition filed |
Effective date: 20230207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220602 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220602 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220704 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230502 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230504 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20170602 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220504 |